GRB 021219: the first Gamma-Ray Burst localized in real time with IBAS

Abstract

On December 19, 2002, during the Performance and Verification Phase of INTEGRAL, a Gamma-Ray Burst (GRB) has been detected and localized in real time with the INTEGRAL Burst Alert System (IBAS). Here we present the results obtained with the IBIS and SPI instruments. The burst had a time profile with a single peak lasting about 6 s. The peak spectrum can be described by a single power law with photon index $\Gamma$=1.6$\pm$0.1 and flux $\sim$3.7 photons cm${}^{-2}$ s${}^{-1}$ (20 - 200 keV). The fluence in the same energy range is 9$\times 10^{-7}$ erg cm${}^{-2}$. Time resolved spectroscopy performed with IBIS/ISGRI shows a clear hard to soft evolution of the spectrum.

arXiv comment4 pages, 3 figures, latex, accepted for publication in A&A INTEGRAL special issue

References in corpus (10)

• A very energetic supernova associated with the gamma-ray burst of 29 March 2003
• Spectroscopic Discovery of the Supernova 2003dh Associated with GRB 030329
• ISGRI: the INTEGRAL Soft Gamma-Ray Imager
• The BATSE Gamma-Ray Burst Spectral Catalog. I. High Time Resolution Spectroscopy of Bright Bursts using High Energy Resolution Data
• BATSE Observations of Gamma-Ray Burst Spectra. II. Peak Energy Evolution in Bright, Long Bursts -
• Prompt and delayed emission properties of Gamma-Ray Bursts observed with BeppoSAX
• The Integral Burst Alert System (IBAS)
• IBIS/PICsIT in-flight performances
• INTEGRAL and XMM-Newton observations of the weak GRB 030227
• GRB021125: the first GRB imaged by INTEGRAL

Cited by in corpus (6)

• Unveiling supergiant fast X-ray transient sources with INTEGRAL
• The Integral Burst Alert System (IBAS)
• INTEGRAL Spectrometer SPI's GRB detection capabilities. GRBs detected inside SPI's FoV and with the anticoincidence system ACS
• Global characteristics of GRBs observed with INTEGRAL and the inferred large population of low-luminosity GRBs
• The updated spectral catalogue of INTEGRAL Gamma-Ray Bursts
• Improving INTEGRAL/SPI data analysis of GRBs